Danfoss 195N2194 VLT2922PT4B20 Frequency Converter

Product Overview

The Danfoss 195N2194 (VLT2922PT4B20) is a robust, legacy-series frequency converter designed to provide precise motor speed regulation in demanding industrial environments. This drive is optimized for applications requiring reliable torque control and energy efficiency, such as conveyor systems, mixers, and industrial pumps. By managing motor frequency and voltage, the 195N2194 minimizes mechanical wear and reduces energy consumption, effectively extending the operational lifespan of motor-driven equipment and preventing premature component failure in high-duty cycle processes.

Technical Configuration

The 195N2194 belongs to the proven Danfoss VLT 2900 series, a platform widely recognized for its compact design and straightforward integration into existing automation architectures.

• Hardware Architecture: The unit is housed in a compact chassis designed for dense cabinet mounting, making it an ideal candidate for retrofitting or upgrading control panels where space is at a premium.
• Operational Control: The VLT 2922 utilizes advanced vector control algorithms to ensure high performance across varying load conditions. It provides seamless acceleration and deceleration ramps, protecting the mechanical integrity of the driven load during rapid speed changes.
• System Integration: This converter is engineered to integrate into standardized 380 - 480 VAC industrial power grids, featuring comprehensive protection circuits that guard against phase loss, ground faults, and thermal overloading.

Technical Specifications

FAQs

Is this drive considered a direct replacement for older VLT 2800 series units?

The VLT 2900 series shares significant physical and functional commonalities with the 2800 series, but exact compatibility depends on the specific parameter settings and I/O requirements. Consult the migration manual for your specific application before performing a swap.

What precautions should be taken when installing this unit in a high-vibration environment?

While the drive is designed for industrial durability, it is recommended to use vibration-dampening mounts if the unit is installed on heavy reciprocating machinery. Ensure all power and control connections are periodically inspected and tightened to prevent contact loosening due to continuous vibration.

Does this model include an internal brake chopper?

The "B" designation in the model suffix typically indicates the inclusion of an integrated brake chopper, allowing for the connection of an external braking resistor to dissipate energy during rapid deceleration.

Engineering Guidelines and Best Practices

• Thermal Management: The VLT 2922 requires adequate airflow for internal component cooling. Install the drive in a vertical orientation with at least 100 mm of clearance above and below the unit. Do not place heat-generating components directly beneath the drive's air intake.
• Shielding Requirements: To comply with electromagnetic compatibility (EMC) standards, utilize shielded motor cables. The cable shield must be terminated at both the drive housing and the motor junction box using 360-degree clamps to ensure a low-impedance path for high-frequency noise.
• Safety and Maintenance: Always disconnect the main power supply and verify the absence of voltage before accessing terminal strips. Wait for the DC-link capacitor bank to discharge—indicated by the status LEDs turning off—to ensure safe handling during maintenance or cable termination.